<style>
    .water-waves {
      margin: 0 auto;
      overflow: hidden;
      position: relative;
      width: 100px;
      height: 100px;
      border-radius: 50%;
      border: 1px solid silver;
      text-align: center;
      line-height: 50px;
      animation: water-waves linear infinite;
    }
  
    .water-wave1 {
      position: absolute;
      top: 40%;
      left: -25%;
      background: #33cfff;
      opacity: 0.7;
      width: 200%;
      height: 200%;
      border-radius: 40%;
      animation: inherit;
      animation-duration: 5s;
    }
  
    .water-wave2 {
      position: absolute;
      top: 45%;
      left: -35%;
      background: #0eaffe;;
      opacity: 0.5;
      width: 200%;
      height: 200%;
      border-radius: 35%;
      animation: inherit;
      animation-duration: 7s;
    }
  
    .water-wave3 {
      position: absolute;
      top: 50%;
      left: -35%;
      background: #0f7ae4;
      opacity: 0.3;
      width: 200%;
      height: 200%;
      border-radius: 33%;
      animation: inherit;
      animation-duration: 11s;
    }
  
    @keyframes water-waves {
      0% {
        transform: rotate(0deg);
      }
      100% {
        transform: rotate(360deg);
      }
    }
  </style>
  
  <div class="water-waves">
    <div class="water-wave1"></div>
    <div class="water-wave2"></div>
    <div class="water-wave3"></div>
    水波效果
  </div>